Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC9LEO callsign genealogy
Currently held by Grant, Leo
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by KC9LEO's current licensee, walking backwards.
- Haskins, Michael JILgranted 2018-07-12cancelled 2020-06-19
Successor callsigns
Callsigns held now by people who previously held KC9LEO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC9LEO, oldest first.
- Grant, Leo WI2005-06-21 → cancelled 2017-06-22
- Haskins, Michael J IL2020-06-19 active